If I leave my truck sit for a day it will start fine and idle. After about 100ft of driving it will not respond to the pedal. I pump the hell out of it, it struggles to stay running, then dies. If I crank on it for about 20 or so seconds a few times the starter seems to wind up faster and the truck will sort of "cough" and then the truck drives fine. Check 3ngine light comes on while it is happening. New fuel filter. Where do I start? Just burned through another glow plug relay. It only lasted a year or less. I think it had been starting all summer without it working.